Question

At what depth below the surface of water will pressure be thrice the atmospheric pressure? (Take : Atmospheric pressure = 10^5 Nm-2, Density of water = 1 gcm-3, g = 9.8 ms-2)
STEP BY STEP Explaining please​

Answer 1

Answer:

Formula : Total Pressure = Atmospheric Pressure+(depth*density of liquid*gravity)

According to the question,

Atmospheric Pressure = 100000 N/m²

Total Pressure = 3*100000 N/m²

= 300000 N/m²

g = 9.8 m/s²

Density of water = 1 g/cc

Now, we have to take density of water as 1000 kg/m³ as we are taking all other units in S.I so we cannot take this one in C.G.S.

So,

300000 = 100000+(depth*1000*9.8)

300000 = 100000+9800depth

200000 = 9800depth

20.4 m is the depth.

I hope this helps.